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Patent US2689504A successfully refreshed from Google Patents.
US2689504A
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US
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Sear locking device for automatic firearms
Assignee: United States, WAR, Secretary of
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Filing: 1950-12-15
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Granted: 1954-09-21
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Expires: 1970-12-15
Abstract
No abstract record available.
Inventors
- 👤 Charles H Cleveland
- 👤 Joseph J Bilodeau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:16
CPC Classifications
F; F41; F41A; F41A19/00; F41A19/06; F41A19/25; F41A19/27; F41A19/29; F41A19/30; F41A19/31
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US946999A
Cited
US1375451A
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US1803349A
Cited
US2427304A
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US2462114A
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US2491534A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-20 | 1958-03-22 | 1958-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-20 | 1962-03-22 | 1962-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-20 | 1966-03-22 | 1966-09-21 | $7700.00 | Window Closed / Lapsed |